Power-feed sawing-machine



(No Model.)

1 5 Sheets-Sheet 1. W. J. EDWARDS.

POWER FEED SAWING MACHINE.

Patented Mar. 10,1891.

(No Model.) 5 Sheets-v-Sheet 2. W J EDWARDS POWER FEED SAWING MACHINE.

Patented Mar. 10,1891.

Illll 1 I I l i 52 (Zia/1244a (No Model.) 5 Sheets-Sheet 3. W. J.EDWARDS.

POWER FEED SAWING MACHINE. No. 447,812. PatentedMar. 10, 1891.

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(Nb Model.) 5 Sheets-Sheet 4.

Y W. J. EDWARDS.

POWER FEED SAWING MACHINE.

No. 447, 12. Patented Mar. 10, 1891.

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(No Model.)

W. J1 EDWARDS POWER FEED SAWING MACHINE.

No. 447,812. Patented Mar. 10,1891.

' UNTTED STATES PATENT OEErcE.

POWER-FEED SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 447,812, dated March10, 1891.

Application filed April 14,1890. Serial No. 347,892. (No model.)

To (LIZ whom it may concern;

Be it known that 1, WILLIAM J. Enwnnns, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Power-FeedSawing-Machines, of which the following is a specification.

My invention relates to power-feed sawing machines wherein a system ofconnected raising and lowering devices is employed for raising andlowering the saw-table, and has for its more prominent objects toprovide exceedingly simple and reliable means for raising and loweringthe saw-table without rocking or tending to rock the same, and, further,to adapt the saw-table for saws of different sizes and pieces ofmaterial of various lengths.

To the attainment of the foregoing and. other useful ends, my inventionconsists in matters hereinafter set forth, and particularly pointed outin the claims.

In the accompanying drawings, Figure 1 is a sectional plan of myimproved sawing-machine, the section being taken below the saw table online 1 1 in Fig. 3, the scale on which Fig. 1 is made being, however,somewhat larger than that of Fig. 3. Fig. 2 represents a section takenlongitudinally through the saw-table and bed-frame on a vertical plane,the legs or depending standards of the sawtable and the greater portionof the table raising and lowering mechanism being shown in elevation,Fig. 3 represents the machine in side elevation. Fig. at is a top planof the saw-table, and Fig. 5 is a bottom plan of the same. Fig. 6 is asection on line 6 6 in Fig. a. Fig. 7 is a section on line 7 7 in Fig.4. Fig. 8 represents, on a larger scale, one of the sawshaft boxes inend elevation, and includes a portion of one of the sides of the bed orbody frame of the machine. Fig. 9 is a section through the box of Fig. 8on line D 9, and shows a portion of the saw-shaft in elevation. Fig. 10is a transverse section through said box on a vertical plane indicatedby line 10 10 in Fig. 1. Fig. 11 represents said box in perspective.

In said drawings, A indicates the bed-frame, which is supported uponlegs B and provided with bearings for the principal operative parts ofthe machine. The saw-table O is supported over and from the bed-frame,and is provided with a'suitable opening for the saw, which is mountedbelow the saw-table and arranged to extend up through the opening in thesame. The rotary feed-wheel (not herein shown) is understood to bearranged over the saw-table and supported by a swinging arm or supportD, which is hung at its lower end below the level of the saw-table andmade hollow, so as to contain shafting for driving the feed-wheel,substantially as.

in United States Letters Patent No. 383,112.

The saw-table is provided withaset of legs or pendent standards 0 and issupported by cables or chains F, (shown in dotted lines in Fig. 2,)which are attached both to the lower portions of the legs and to windingdrums or pulleys G, whereon they can be wound, in which way by operatingsaid pulleys the table can be raised and lowered by the winding andunwinding of the chains or cables upon and from the pulleys. The pulleysGr are fixed upon the horizontally-arranged rotary shafts II and II, twoof said pulleys being placed upon each shaft. These rotary shafts H andII are arranged, respectively, at the front and rear ends of themachine, and canbe operated synchronously, so that in raising andlowering the table it will be kept in a horizontal condition. As a meansfor operating the raising and lowering mechanism comprising the pulleysand chains, I provide a horizontally-arranged rotar'y shaft I, which issupported by the bed-frame and gear connected with the rotary shafts Hand H. Said shaft is also provided at one end with a crank i, by whichit can be readily operated by an operator standing in front ofthemachine. The said crank t' is movable lengthwise upon "the shaft I, andwhen it is desired to turn said shaft it is moved outwardly near theouter end thereof, so that the other parts of the ma chine will notinterfere with it. When not in use it is moved inwardly upon the shaft,and is illustrated in this latter position. As a suitablegear=connection between the operating-shaft I and the pulley-shafts IIand H, the shaftI may, as herein shown, be connected with thepulley-shafts by worm-gearing consisting, for example, of worms i on theshaft I, arranged to engage worm-wheels h on the pulley-shafts,although, as a matter of course,

other forms, of gearing can be employed. The legs or standards Q of thesaw-table are recessed longitudinally, so as to receive to some extentthe pulleys G, in which way the pulleys and longitudinally-recessedstandards also serve as guides, which steady the sawtable during itsvertical adjustment and hold it true afterit has been adjusted. By meansof the foregoing devices the table can be readily raised and loweredindependently of the bed-frame whereon the saw-shaft is mounted, andhence the extent to which it is desired the saw shall project above thetable can be determined. It will also be observed that in the power-feedsawing-machine of Patent N 0. 388,112 the swing of the feedwheel supportwill cause thefeed-wheel to be moved bodilyin the arc of a circleproximately concentric with the axis about which the saw revolves. Thisadjustment of the feed-wheel may be desirable, and at the same it. maybe desirable. to raise or lower the; tablewith particular reference tothe position of the feedwheel, and this can obviously be attained byvertically adjusting the saw-table, as hereinbetore set forth. While thelegs or standards of the saw-table are guided by the pulleys, I- alsoprovide, as a means for positively holding the saw-table. steady andpreventing any tilt thereof, a couple of guide or steady rods K, Fig; 3,which are arranged, respectively, at opposite ends of the machine. Theserods are secured to the saw-table and extend downwardly through eyes a,Fig. 1,. on thebed-frame, by which arrangement the rods can slide in theeyes when the saw-table is raised and lowered.

The. saw-table is provided with a couple of rollers L and L, which aremounted, respectively,at its front and rear endsand arranged so that thework which is being fed to and delivered from the saw may run upon them.I also provide the saw-table: with a pair of rollers M and M, which arearranged between thetwo end rollers L and L and. placed, re.- spectively, in front and. in rear of the point wherev the saw operates; Whilethe end rollers L and L are of particular service in feeding theworkonto the table at the received end thereof and carrying oil the workfrom thedielivery end of the same,the intermediate rollers M and Mserveto support and permit the. free travel of the work near the saw.

The rollers Land L are conveniently j ournaled in bearings c on the endsof the sawtable. The rollers M and M" are. arranged withinslots 0, whichare formed through aportion of the width of the table and arrangedtransversely to the length thereof, thebearings c for said rollers beingupon the under side of the table.v The table. is also provided with aremovable center piece P, which supports a couple of short rollers N andN.

The saw is understood toextend up through and above the removable centerpiece P at a point between the two rollers Nand N, which said rollerslie comparatively near the saw and serve to support the work at pointsboth in front of the saw and in rear of the same. Should it be desiredto employ an unusually large saw, the center piece P, with its rollers Nand N, can be removed from the saw-table, and in such case the rollers Land L will support the work at points adjacent to the saw.

The center piece P can be fitted within a suitable opening in thesaw-table and held therein in any convenient way, and as a matter offurther improvement I provide said center piece with aremovable woodenslab or block Q. This wooden block is provided with a slot q, derstoodto extend upwardly. By employing mate-rial such as wood for the piece orblock Q all danger of injury to the saw-teeth is avoided. By removablyholding the block at the center of the saw-table, or at the point wherethe sawing is to be efiected, it can, when so desired, be removed, sothat a larger saw can be used. The wooden block can. he applied to thecenter piece in any suitable wayas, for example, the center-piece canbe:provided with an opening corresponding in size with the wooden. blockand surrounded by a ledge or seat 19-, whereon the wooden block can beseated.

The circular saw rotary shaft. S, which is mounted in boxes T and T onthe bed-frame- The lower por tion t of the box T is cast integral withone of the sides a. of thebed-frame, and is provided with a chamber 15,adapted to" contain a suitable quantity of cotton waste and Inbricant.This chamber is arranged below the shaft S, which extends through asoftnie-tal bearing t such as a Babbitt metal bearing, which is arrangedwithin the box.. The chamber t communicates bya-shortipassage i Fig. 9,

for a portion of its length formed with annular grooves, as at. s. Itisfound that by forming the annular grooves s in said shaft thelubricant seems to more readily distributeih self along the bearing thanif said shaftwas. not providedwith such grooves. The lower half of thebox, which is: in efifect an enlarged portion of one of the side bars ofthe bed;-

frame, is also. provided with an upwardly-ex tending supply-passage t,which terminates atv its. upper end in a nipple t wherein thelubricating matters can be introduced. The upper portion of the boxconsists of av cap t, which isbolted on the side bar of the: bedframeand extended in correspondence with the extended ends t of the. lowerportion of' the box. The box T isunderstood to be com structed like thebox T, and hence need not be shown in detail.

What I claim as my invention is.

1. The combination, substantially as hereinbefore set forth,ot' abed-frame whereon the saw is mounted, the elevated saw-table pro R, Fig;I, is held upon a.

with the bore through which. the saw-shaft extends, and the. saw-shaftis through which the saw is unvided with legs or pendent standards,gearconnected shafting supported upon the bedfrarne and provided withWinding-pulleys arranged at the corners of the machine, and chains orcables attached to said legs or standards of the saw-table and connectedwith the pulleys, so that they can be wound upon and unwound from thepulleys for the purpose of varying the height of the saw-table.

2. The combination, substantially as hereinbefore set forth, of thesaw-table provided with legs or pendent standards, and a raising andlowering mechanism therefor, comprising the transversely-arranged rotaryshafts 11, carrying winding-pulleys, the longitudinallyarranged rotaryshaft I, geared to said transversely-arranged shafts, and chains orcables attached to the legs or pendent standards of the saw-table andconnected with the pulleys on the transversely-arranged shafts, for thepurpose described.

3. The combination, substantially as hereinbefore set forth, of thevertically-movable saw-table provided with grooved legs or pendentstandards 0, gear-connected shaftingprovid ed with winding-pulleys G,which are partially received within the grooves of the legs or pendentstandards, and chains or cables attached to the legs or pendentstandards within the grooves thereof and connected with the winding-pulleys, forthepurpose described.

4. The combination, with the saw-table provided with acentrally-arranged opening, of the removable center piece P, providedwith rolls N N and removably fitted in said opening and arranged to liein the plane of the table, said rolls being respectively at the frontand rear of the saw, which projects up through said center piece,substantially as and for the purpose described.

5. The center piece P, reniovably applied to the saw-table and providedwith a removable slotted block Q, substantially as and for the purposeset forth.

6. The saw-table provided with end rollers L and L and intermediaterollers M and M and having a removable center piece P, provided withrollers N and N, substantially as and for .the purpose described.

WILLIAM J. EDWARDS. Witnesses:

CHAS. G. PAGE, HARRY O. KENNEDY.

